In Science
- The atomic number of argon
- The 18-electron rule is a rule of thumb in transition metal chemistry for characterising and predicting the stability of metal complexes
- The number of years in the Saros cycle of eclipses of the sun and moon
Read more about this topic: 18 (number)
Famous quotes containing the word science:
“There are some things in science which should be brought to light. There are others, doctor, which should be left alone.”
—Griffin Jay, Maxwell Shane (1905–1983)
“Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house.”
—Jules Henri Poincare (1854–1912)